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EC2  >  Structures  >  ReservedCapacityOptions

ReservedCapacityOptions

Structure Class

ReservedCapacityOptions dataclass

Bases: _SerdeShape

Defines EC2 Fleet preferences for utilizing reserved capacity when DefaultTargetCapacityType is set to reserved-capacity. EC2 Fleet can fulfill reserved capacity using On-Demand Capacity Reservations, Capacity Blocks for ML, and interruptible Capacity Reservations.

Attributes

allocation_strategy class-attribute instance-attribute 
allocation_strategy: str | None = ...

The strategy that determines the order in which EC2 Fleet launches instances across the reservation types that you specify. The only supported value is prioritized, which launches instances in the priority order that you specify in your launch template overrides. If you don't specify an allocation strategy, instances are launched in a random order.

reservation_types class-attribute instance-attribute 
reservation_types: list[str] | None = ...

The types of Capacity Reservations used for fulfilling the EC2 Fleet request.

reserved_capacity_fallback_options class-attribute instance-attribute 
reserved_capacity_fallback_options: ReservedCapacityFallbackOptions | None = ...

The fallback behavior for the EC2 Fleet when there is not enough reserved capacity available to meet the target capacity.